Stock shell retaining device



Oct. l, 1963 F. K. BARNs ETAL sTooK SHELL RETAINING DEVICE Filed Nov.28, 1961- United States Patent O 3,105,648 STOCK SHELL RETAINING DEVICEFred K. Barns, Akron, and Courtney H. Wenger, Cuyahoga Falls, Ohio,assignors to The B. F. Goodrich gonlapany, New York, N.Y., a corporationof New Filed Nov. 28, 1961, Ser. No. 155,314 3 Claims. (Cl. 242-72.1)

This invention pertains to the art of winding and unwinding of sheetmaterial, and, more particularly, to the winding of sheet material on acylindrical shell or roller.

Most winding shells, whether they be formed of wood or metal, have anaxially extend-ing passageway formed therethrough which is square incross section. This square passageway accommodates a square shaft overwhich the shell may be placed. Controlled -b-raking tension or arotative -driving -force may be applied to the shaft to regulate itsrotation in either winding or unwinding sheet material from the shell.Because of the square passageway, the shell is unable to rotate relativeto the shaft. However, as is well known in the art, when winding orunwinding elongated sheet material onto or from such a cylindricalshell, the shell will tend to move axially on the shaft, due to uneventensions imposed upon the shell by the material. Such movement willcause the fabric to bag, or sag, at one side or the other causing it towrinkle or to telescope upon itself when being wound. This isparticularly troublesome where two or more sheets of material are beingwound together and their alignment, one with the other, is critical.

It beca-me incumbent upon those concerned with such winding operationsto devise a means for axially locki-ng the shell on its shaft. Severalcrude expedients have been attempted in the past with unsatisfactoryresults. Many times ishims or Wedges were driven between the shaft andthe walls of the shells passageway. This, of course, damaged both shelland shaft alike, shortening their useful life, to say nothing `of theproblems arising upon attempted removal of the shell [from the shaft.

It is an object of this invention therefore, to provide a shellsupporting shaft, incorporating mechanism for locking said shell to saidshaft, the actuation of which may be accomplished quickly and easilywithout damage to either shaft or shell.

It is another Iobject of this invention to provide an apparatus asdescribed in the preceding paragraph wherein said mechanism utilizes alocking shoe extensible from within said shaft to engagement with ashell positioned on the shaft.

It is a further object of this invention to provide an apparatus asdescribed in the preceding paragraph wherein the movement of saidlocking shoe may 'be easily regulated from one end of said shaft.

Further objects and advantages of the invention will be apparent tothose skilled in the art to which it pertains from the `followingdescription of the presently preferred embodiment of the inventionillustrated in the drawings forming part of this application, and inwhich:

FIG. 1 is a fragmentary, side elevational view of a shell shaft fittedwith the apparatus of this invention, with a portion of the shaft cutaway;

FIG. 2 is a plan view of the shaft and apparatus as shown in FIG. 1;

FIG. 3 is a cross sectional view of the shaft and apparatus, taken alongline 3-3 of FIG. 1, with a wooden shell, upon which sheet material isbeing wound, mounted thereon; and

FIG. 4 is an elevational view of one end of the shaft shown in FIGS. land 2.

The shaft 10, has a square passageway 11, best seen in FIG. 3, extendingfrom one end to the other and defined by four walls 112, 13, 14 and `15lof the shaft. Located w-ithin an opening 16 in Wall 12, and mounted formovement therethrough is a rectangular shell locking shoe 17. By simpleadjustment of a socket head bolt 18, journalled at one end of shaft 10,locking shoe 17 may be moved to and from -frictional locking engagementWith a shell 19 supported by shaft 10.

Pivotally mounted by one end on a pin 20, press iitted int-o shaft walls13 and y14, is a pivot arm 21. A generally U-shaped spring 2,2 ismounted at the opposite end of pivot arm -21 and bears against the innersides of shaft walls 12 and 15 to normally depress arm 21 towards wall15. On :the upper side of pivot arm 21 is a pivot bracket 23 throughwhich is mounted a pivot pin 24. Pivotally mounted on pin 24 by means ofclevis brackets 25 and 26 is the locking shoe 17. A spring 27, whichprevents shoe `17 from becoming cocked in opening 16 and jammed againstthe end =of the shell 19 when the shaft 1t) is inserted therein, isbiased between arm 21 and shoe 17; and is located therebetween by meansof a spring recess 28, formed in ythe underside of shoe 1'7, and aretaining pin 29 mounted on the top of arm 2.1.

Mounted in the end of the shaft 10, by means not shown, is a plug 3@having a square plug portion 31 and a transition cap 32, the outer endof which is circular in cross section as seen in FlG. 4, `for rotationof the shaft `10 in conventional shaft support brackets, not shown. Theplug 3o has 1an axial passageway 33` countersunk as at 34- to receivethe socket head bolt 18. Bolt 18 has an Unthreaded shank portion 35journalled in plug passageway 33. Loosely fitted about the portion ofshank 35 extending beyond the square plug portion v31 of plug 30 is aWasher 36. A locking nut 37 is mounted on the threaded portion 38 of-bolt 18, closely adjacent washer 36, and locked thereto by means of atapered pin 39. Adjacent the nut 37 a thick bumper washer 40, preferablyof resilient material, `is mounted on bolt y18, next to which is alsomounted' a metal washer 41. Threadably engaged with the end of thethreaded portion 38 is a long hexagonal nut 42 to one face of which ismounted one end of an elongated bar member 43 slideably engaged with theinner face of Wall 15 to prevent nut 42 from rotating. At the other endof bar member 43 is mounted a tapered wed-ge cam member 44- forengagement with the underside of pivot arm 21.

In using a shaft 1G incorporating this invention the operator places theshell 19 over the shaft with the locking shoe 17 in its retractedposition. After positioning the shell `19 on the shaft, the operatorturns bolt 13 counterclockwise. The bolt 18 remains axially stationaryand therefore hex nut 42, which is unable t-o rotate thereon, is movedtoward pivot arm 2.1. Movement of nut ft2 toward farm 21 brings wedgecam member 44- linto carnming engagement with the underside `of arm 21which then rides up the inclined portion of the wedge member to raiselocking shoe 17 through wall opening 16 to locking engagement with theshell 19.

It will be readily appreciated that locking shoe 17 may be locatedanywhere along the shaft 10 depending upon the length of bolt 18 or barmember 43. With particularly long shafts it may be of advantage toincorporate a locking shoe near each end, each operable from itsrespective end.

Although the invention has been described with reference to its onepresently preferred embodiment and a particular use thereof,modifications may be made tothe illustrated structure and other useswill be appa-rent to those skilled in the art to which i-t pertainswithout departing from the spirit and scope `of the invention as deiinedin the appended claims.

We claim:

1. Apparatus for preventing relative axial movement between a shaft anda material winding shell coaxially supported by ,said shaft; comprisingan axial rst passageway formed in an end of said shaft; a secondpassageway communicating said rst passageway with the exterior of saidshaft at a right angle to said rst passageway; a pivot member pivotallymounted in said first passageway; a locking shoe pivotally mounted onsaid pivot member for movement through said second passageway, to andfrom locking engagement with said shell as said pivot member is pivoted;means normally urging said locking shoe away from said secondpassageway; means to maintain the orientation of said locking shoegenerally parallel to the longitudinal axis of said shaft; a rotatablemember having a threaded portion journalled at said end of the shaft; anon-rotatable thread follower mounted on said threaded portion formovement relative thereto as said rotatable member is axially rotated;and a cam member mounted on said thread follower for engagement withsaid pivot member, thereby moving said locking shoe to and from saidlocking engagement as said rotatable member is rotated in oppositedirections.

2. Apparatus for preventing relative axial movement between a shafthaving a square cross section and a material winding shell coaxiallysupported by said shaft; comprising an axial rst passageway of squarecross-section formed in iafn end of said shaft; a rectangular secondpassageway communicating said first passageway with the exterior of saidshaft at a right angle to said first passageway through a side of saidshaft; a pivot member pivotally mounted within said rst passagewaybetween two opposite sides of said first passageway for movement of anend of said member toward and away from said second passageway; springmeans normally urging said pivot member away from said secondpassageway; a shell locking shoe pivotally mounted on said pivot mem-berfor movement within said second passageway to and from lockingengagement with said shell as said pivot member is pivoted; a secondspring means disposed between and mounted on said pivot member and saidshoe to thereby normally maintain said locking shoe in parallelalignment with the longitudinal axis of said shaft; a rotatable member,having a threaded portion, journalled at said end of said shaft; anon-rotatable thread follower mounted on said threaded portion formovement relative thereto as said rotatable member is rotated; and a cammember mounted on said thread follower for engagement with sa-id pivotmember to thereby move said locking shoe to and from said Ilockingengagement as said rotatable member is axially rotated.

3. Apparatus as defined in claim 2, wherein said second spring meansfurther comprises a coil spring having one -end mounted at said end ofsaid pivot member and the other end of said spring mounted on saidlocking shoe at a location away from the position at which said shoe ispivotally mounted to said pivot member.

References Cited in the file of this patent UNITED STATES PATENTS1,212,600 Altemus Ian. 16, 1917 1,846,767 Stever et al. Feb. 23, 19322,443,243 Hayssen June 15, 1948 2,616,631 Bauer Nov. 4, 1952 2,904,278Riemenschneider Sept. 15, 1959 2,983,460 Wright May 9, 19,61

OTHER REFERENCES Stockel, German application 1,038,709, printed Sept.11, 1958 (Kl. 29a 6/13).

1. APPARATUS FOR PREVENTING RELATIVE AXIAL MOVEMENT BETWEEN A SHAFT ANDA MATERIAL WINDING SHELL COAXIALLY SUPPORTED BY SAID SHAFT; COMPRISINGAN AXIAL FIRST PASSAGEWAY FORMED IN AN END OF SAID SHAFT; A SECONDPASSAGEWAY COMMUNICATING SAID FIRST PASSAGEWAY WITH THE EXTERIOR OF SAIDSHAFT AT A RIGHT ANGLE TO SAID FIRST PASSAGEWAY; A PIVOT MEMBERPIVOTALLY MOUNTED IN SAID FIRST PASSAGEWAY; A LOCKING SHOE PIVOTALLYMOUNTED ON SAID PIVOT MEMBER FOR MOVEMENT THROUGH SAID SECONDPASSAGEWAY, TO AND FROM LOCKING ENGAGEMENT WITH SAID SHELL AS SAID PIVOTMEMBER IS PIVOTED, MEANS NORMALLY URGING SAID LOCKING SHOE AWAY FROMSAID SECOND PASSAGEWAY; MEANS TO MAINTAIN THE ORIENTATION OF SAIDLOCKING SHOE GENERALLY PARALLEL TO THE LONGITUDINAL AXIS OF SAID SHAFT;A ROTATABLE MEMBER HAVING A THREADED PORTION JOURNALLED AT SAID END OFTHE SHAFT; A NON-ROTABLE THREAD FOLLOWER MOUNTED ON SAID THREADEDPORTION FOR MOVEMENT RELATIVE THERETO AS SAID ROTABLE MEMBER IS AXIALLYROTATED; AND A CAM MEMBER MOUNTED ON SAID THREAD FOLLOWER FOR ENGAGEMENTWITH SAID PIVOT MEMBER, THEREBY MOVING SAID LOCKING SHOE TO AND FROMSAID LOCKING ENGAGEMENT AS SAID ROTATABLE MEMBER IS ROTATED IN OPPOSITEDIRECTIONS.